Health officials and the state Department of Health reported Friday that they believe that the gastroenteritis illnesses reported were not related to food. They will continue to investigate the cause of the sickness.

The school district told WISN 12 News that 50 students were sent home Thursday with symptoms of vomiting, nausea, diarrhea and occasionally low-grade fever.

The spring concert Friday night was also canceled.

The school was thoroughly cleaned Friday by the custodial staff.

Children who develop the symptoms over the weekend are are asked to remain at home.